Double-moldboard plow



IVI. SCHULTZ.

DOUBLE MOLDBOARU PLOW.

M'iUCATION FILED IULYl 15,!920.

LSSQWL IVI. SUHULTZ.

DOUBLE MOLDBOARD PLOW.

APPLICATION FILED JULY 16,1920.

Patented July E9, M211,

2 SHEETSHSHEE] 2.

DUBLEMOLDBOED PYAOW.

Specification of Letters Patent.

i?atenter'l July it,

.Application tiled July 15, w39. Serial No. @$542.

To all wlw/m it' may concern.'

Be it known that l, Minen ScHUL'rZ, a citizen of the United States of America, re'- siding at laylor, in the county of firmstrong and State of Pennsylvania, have invented certain new and useful improvements in Double-Moldboard Flows, of which the following is a specification.

This invention relates to certain new and useful improvements in double moldhoard plow-s, or plows of that type which, instead of having landsides, have a second moldboard so that it turns a ldouble furrow, throwingY the earth in opposite directions, and particularly serviceable for making surface drains,l ridging up, etc. i

Many plows have heretofore been made so as to have their double moldboards expand, and they have been' adjusted by various inechanical contrivances although regulated with some diiiiculty. Besides this` the inajority of double moldboard plows are cornmonlyv provided with such mechanism tor expanding` the moldboards thereof that they cannot be conveniently expanded and con tracted while the plow is running, a great. desiderat-um when the rows of corn are at irregular distances apart in order to cultivate it properly. y

By the present improvement, these objections are obviated, first by moving wings of the moldboard only, and, secondly, by an improved mechanism by 'which the expand ing can be edected easily and conveniently while the plow is in motion. y

Other objects will appear as the nature of the invention is better understood, and the same consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanyinp,r drawings and claimed.

ln the drawings, wherein like reference characters indicate corresponding parts throughout tbe several views,

`Figure 1 is a side elevational view of a plow constructed in accordance with the present invention,

Fig'. 2 is a bottom plan View thereof, with the handles partly broken away,

Fig. 3 is an end view of the device shown in Fig. 2 looking` toward the right of the latter and drawn on a larger scale, and

Fig. 4 is a horizontal sectional View taken on line :lV-1V of Fig. 3.

Referring more in detail to the several views, the present invention embodies the usual beam 5 provided with a clevis 6 at its 'forward end and having,` handles 'i' at its rear end, which handles are preferably ot strip metal suitably formed and bolted. as at 8 to the beam 5 as well as provided with hand grips 9 at their free ends.

The forward end po 1tion of the beam 5 is provided with a shank 11 of the furrow gage 12.

A combined standard and double stationary moldboard member 19 is rigidly fastened to 'the beam 5 rearwardly of the furrow gage, said member 19Ybeing provided with an angular extension 2O adapted to be tted and bolted in a groove or" the beam 5 for this purpose as clearly shown by dotted lines in Fig. 1. rlhe lower end of the member 19 is provided with a forward extension 21 having a double plow share and point 22 bolted thereon, and a bar 23 has its forward end rigid with the lower end of the member 19 and extends rearwardly to a point beneat-h the rear end of the beam 5 where the lower ends of the handles 'l' are bolted theret0 as at :24.

The combined standard and double moldboard member i9 has a pair of movable wings 25 hinged to' the rear edges thereof, one on each side and movable inwardly and outwardly toward and away from each other, the hinges 2G of the wings being substantially vert-ical so that the wings swing substantially on a horizontal plane. For the purpose of practicability and convenience in manufacture, the stationary moldboard members 19, standard 19 and extensions 2() and 21 are preferably formed integral.

An adjusting screw 27 is substantially horizontally disposed beneath the beam 5 rearwardly ot the member 19 and has its 'forward end journaled in the latter member as clearly shown at 2H in Fig-el. The rear end portion ot said screw 27 is journaled in a swiveled bearingr 2f) supported by and between the handles T beneath the beam 5. bevel gear 3() is fastened upon the extreme rear end of the screw 27 and meshes with a similar gear 31 Jfastened upon the lower end 0i' la vertically disposed shaft 32 which projects through and is journaled in the rear end of the beam 5. a suitable crank or handle 33 being provided upon the upper end oi the shaft within convenient reach of the operator oi' the plow. A nut in the form of a threaded sleeve 34 is threaded upon the screw 27, and each side of said nurl is connected to one of the .moldboard wings V25 by means of a link 35, one end of each link-being pivoted in an ear ,36 ofthe adjacent wing and in an ear 37 at the adjacent side of the screw 34. It will thus be seen that when the shaft 32 is manually rotated, the screw 27 is also rotated for causing traveling movementof the nut 34 on said screw longitudinally of the latter, forward movement of the nut 34 causing folding of the links 35 for contracting or collapsing the wings 25, and rearward movement of said nntcausing expansion of the Wlngs by reason of the straightening' of the links 35. The bearing 29 is swveled so as to prevent any likelihood of binding of the parts of the adjusting mechanism, and as the wings :25 are similar but reversely curved and the connections between the same and the nut 34 are identical, itV will be seen that similar operative movement of the wings will be caused upon operation of the shaft 32.

The present plow can be contracted and expanded readily while in motion and within sufficient range to take care of any irregularity in running the rows in planting when the plow is used between rows for cultivating. Also, by this means, a great saving in labor and time can be obtained and the work can be more satisfactorily performed Jfor improving crops by means of the present practical construction.

Minor changes may be made without departing from the spirit and scope of the invention as claimed.

What is claimed as new is In a double mold boa-rd plow of the class described, a horizontal beam, a combined double stationary mold hoardand standard rigid with and extending downwardly from the intermediate portion of the beam, oppositely curved mold board wings hinged to the rear edges oi' the combined mold board and standard for a lateral swinging movement, a vertical crank shaft ournaled in and extending through the rear end ot said beam, a crank handle on the upper end of said crank shaft above the beam, a substantially horizontal screw arranged longitudinally beneath the beam and having its rear end geared'to the lower end ot said crank shaft, a nut threaded upon said screw and having flexible connections with said wings, said flexible connections each including a link pivoted to the nut and to one adjacent wing, a pair of piow handles secured against the opposite sides of the beam and extending above and below the latter, said screw being journaled at its forward end in the combined mold board and standard, and a swiveled bearing t'or'the rear end portion of said screw carried by and mounted between the lower portions of said handles beneath the beam.

In testimony whereof aiiix my signature.

LHKEL SCHULTZ. 

